Disregarding taxes and financial incentives that may bias things, putting it in a field means you don't need to work on a roof to maintain it, you aren't limite

Disregarding taxes and financial incentives that may bias things, putting it in a field means you don't need to work on a roof to maintain it, you aren't limited by roof area, and you don't need to worry about the roof weight limit or damage during installation. I think there is no question a field is preferable if there are fields to work with. Of course, in a city that isn't much of an option and there are significant advantages to point of use generation (i.e. no need to upgrade power lines from rural solar fields to a city center). I used to live in Boulder, and while I'm not sure exactly which field they're talking about it was not a long bike ride into farmland. I can imagine it working much better there than a bigger city.